Here is another idea:
Continent-wide announcements.
You have to be a Duke or higher to make one. It costs money to ensure every knight gets the message. Let's say 1 coin per noble currently on the continent, so 200-300 coins for most islands. And it is limited to one message per week.
This way realms could let the entire world know what's going on. High cost and high cooldown will ensure this is not used for banter but for important messages.
Care to share an example that realms would use it for. I also dont see it as something that fixes the issue of interaction.
